CN108017378A - A kind of water-based alumina base 3D printing base substrate method and its forming method - Google Patents

A kind of water-based alumina base 3D printing base substrate method and its forming method Download PDF

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CN108017378A
CN108017378A CN201711413233.4A CN201711413233A CN108017378A CN 108017378 A CN108017378 A CN 108017378A CN 201711413233 A CN201711413233 A CN 201711413233A CN 108017378 A CN108017378 A CN 108017378A
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printing
water
base substrate
based alumina
base
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银锐明
徐凯
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Hunan University of Technology
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Hunan University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/624—Sol-gel processing
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6026—Computer aided shaping, e.g. rapid prototyping
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/606—Drying
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time

Abstract

The present invention relates to 3D technology field, discloses a kind of water-based alumina base 3D printing forming method.The water-based alumina base 3D printing forming method comprises the following steps：S1. using water as carrier, monomer N, N methylene bisacrylamide acyl, crosslinking agent methylene-bisacrylamide, dispersant PAA NH4, TMEDA are added into deionized water, adds the Al that volume ratio is 20~65%2O3Original washing powder body, it is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；S2. preparing can be spare as substance B with the initiator ammonium persulfate of step S1 organic monomers generation gelling reaction；S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；S4. mixture C is delivered to 3D printing head and gives the temperature that organic monomer can be accelerated to polymerize so that 3D printing head implements printing under 150 DEG C of atmosphere, is printed according to three-dimensional modeling data, layer upon layer shaping, finally obtains the base substrate of required shape.

Description

A kind of water-based alumina base 3D printing base substrate method and its forming method
Technical field
The present invention relates to 3D technology field, more particularly, to a kind of water-based alumina base 3D printing base substrate method and its Forming method.
Background technology
3D printing technique is a kind of emerging rapid shaping technique, by being successively superimposed material manufacture 3 D stereo
The technology of structure material object, different from traditional removal material manufacture technology, therefore also known as increasing material manufacturing, 3D printing are main Selective laser sintering technology (SLS), melting sedimentation (FDM) and Stereo Lithography technology (SLA).
The high-strength high hardware features of advanced ceramics material and hard material, make it be difficult to be molded, development in science and technology to ceramics, Hard alloy product complexity and required precision are higher and higher, this has become the biggest obstacle of its application.And increasing material manufacturing（3D Printing）The appearance of technology, then make it possible breakthrough advanced ceramics application biggest obstacle i.e. difficult forming.3D printing ceramics nothing Proembryo and mould are needed, is also not required to process, just can be directly according to computer graphics data, the method by increasing material generates any The complex structure of shape, therefore paid close attention to be subject to domestic and international ceramic field expert height.The Gao Rong of ceramics and hard alloy Point, high hard brittleness cause its increasing material manufacturing to be most difficult to the material of printing shaping, usually to make by high molecular material or metal material 3D printing is carried out for binding agent.Adopt selective laser sintering, selective laser fusing, laser near-net-shape, electron beam selective melting etc. Straight forming mode can often produce larger thermal stress in rapid solidification, so that more micro-crack is formed, it is uncomfortable Close increasing material manufacturing ceramic material.Fused glass pellet mixes ceramic powders and organic binder bond, with extruder or capillary Blood vessel rheometer makes silk, and then layer molding mode makes ceramic member raw embryo, prepared by follow-up sintering.The shortcomings that the method It is that surface zonal texture occurs, formed precision is poor, needs follow-up grinding process.Photocuring is 3D printing technique formed precision highest, And efficiently, highly integrated, stock utilization is high, its print the operation principle of ceramic powders be by by laser added with ceramics Powder or presoma liquid photosensitive resin optionally curing molding complex parts, then through drying, degreasing, sintering, so can Although to protect the high accuracy of sign forming ceramic products, costly, system operates liquid requires harsh, shaping to its equipment Part is mostly resin, and material price is expensive and limited capacity, is unfavorable for storing for a long time, environmental pollution is serious.
For existing 3D printing technique there are the defects of, the present invention gel-casting technology is combined with 3D printing, proposition A kind of water-based alumina base 3D printing forming method, the principle of gel injection molding and forming technology is that situ-gel cures, shaping speed Comparatively fast, can near-net-shape complex component, and even green body is good, high mechanical strength, sintering character are excellent, therefore opens up Exhibition Gelcasting Technique is combined with 3D printing techniques, it will thus provide a kind of brand-new 3D printing technique, so as to solve existing The defects of 3D printing technique, expand and apply the molding Material Fields of 3D significantly.
The content of the invention
The technical problem to be solved in the present invention in view of the deficiencies of the prior art, introduces casting molding technique, using water as carrier, With reference to 3D printing technique, there is provided a kind of brand-new water-based alumina base 3D printing base substrate method.
The present invention also provides a kind of water-based alumina base 3D printing forming method.
The purpose of the present invention is achieved by the following technical programs：
A kind of water-based alumina base 3D printing forming method is provided, is comprised the following steps：
S1. using water as carrier, monomer N, N- methylene bisacrylamide acyl, crosslinking agent methylene bisacrylamide acyl are added into deionized water Amine, dispersant PAA-NH4, catalyst TMEDA, add the Al that volume ratio is 20~65%2O3Original washing powder body, obtains after ball grinding stirring Low viscosity, the suspension slurry A of high solid volume fraction are spare；
S2. preparing can be spare as substance B with the initiator ammonium persulfate of step S1 organic monomers generation gelling reaction；
S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；
S4. mixture C is delivered to 3D printing head and gives the temperature that organic monomer can be accelerated to polymerize so that 3D printing head exists Implement printing under 150 DEG C of atmosphere, printed according to three-dimensional modeling data, layer upon layer shaping, finally obtains required shape Base substrate.
The principle of the present invention is the Al for using water as carrier, adding low-density2O3It is preferable that dispersiveness is formed after powder body material Powder suspension, the powder suspension viscosity is low, and solid concentration is high, good fluidity, after adding organic monomer, will be uniformly dispersed Powder suspension in particles coat be allowed to fixation in situ, so as to obtain the outstanding of the composite material of powder and macromolecule organic Supernatant liquid, the substance B by the way that gelling reaction occurs with organic monomer, which mixes, is chemically crosslinked the organic monomer in suspension liquid Or it is physical crosslinking the base that advanced base intensity and precision into three-dimensional network-like structure, are quickly prepared with reference to 3D printing technique Body.
Preferably, N described in step S1, N- methylene bisacrylamide acyl addition are 45~55wt%, the di-2-ethylhexylphosphine oxide third Acrylamide addition is 0.5~1.5wt%, and the addition of the PAA-NH4 is 3~5wt%, the addition of the TMEDA for 4~ 6wt%。
Preferably, described in step S1 defrother is also added into deionized water.
Preferably, ammonium persulfate concentrations described in step S2 are 1%.
Preferably, the mass ratio of substance B described in step S2 and slurry A are 2:90~100.
Preferably, three-dimensional modeling data described in step S4 is to design required planform using 3D sculpting software Part model, by part model carry out hierarchy slicing processing, synusia thickness is 0.05~0.2mm.
The present invention also provides a kind of water-based alumina base 3D printing forming method, comprise the following steps：By above-mentioned water-based oxygen Change the base substrate that is prepared of aluminium base 3D printing base substrate method to be dried, obtain high intensity base substrate, then dumping and sinter, obtain Final products.
Preferably, the drying refers to base substrate placing 24~72h in room temperature, is then dried in vacuo at 60 DEG C.
Preferably, the dumping and sintering refer to that base substrate keeps the temperature 3h at 600 DEG C and carries out dumping processing, then are placed on vacuum bar Under part, temperature is to sinter 2h at 1000~1300 DEG C.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention for existing 3D printing technique there are the defects of, gel-casting technology is combined with 3D printing, propose one kind Water-based alumina base 3D printing forming method, the situ-gel principle of solidification is combined with 3D printing, without proembryo and mold developing, Also it is not required to process, just can be directly according to computer graphics data, the method by increasing material generates the complex shape of any shape Shape object, this method is even green body in ensure that gel-casting technology is good, high mechanical strength, excellent sintering character the advantages of Meanwhile production efficiency is also drastically increased, the base substrate green strength printed is high, precision is high.
The present invention using low viscosity, high solid volume fraction, good fluidity powder suspension as 3D printing raw material, without Conveying, mixing and extrusion can be realized in 3D printing equipment by ambient pressure, with cost is low, reliability is high, operational The advantages that strong, and hardening time is fast, it is high to cure precision, it is easy to accomplish industrialized production.
The present invention can reduce the viscosity of gelling precursor using water as solvent, avoid using caused by organic matter solvent Problem of environmental pollution, and drying process is simple, belongs to environmentally friendly technique, is adapted to industrialized production.
Brief description of the drawings
Fig. 1 present invention process flow charts.
Fig. 2 present device schematic diagrames.
Embodiment
The present invention provides a kind of water-based alumina base 3D printing forming method, concrete technology method as shown in Figure 1, including with Lower step：
S1. using water as carrier, monomer N, N- methylene bisacrylamide acyl, crosslinking agent methylene bisacrylamide acyl are added into deionized water Amine, dispersant PAA-NH4, catalyst TMEDA, add the Al that volume ratio is 20~65%2O3Original washing powder body, obtains after ball grinding stirring Low viscosity, the suspension slurry A of high solid volume fraction are spare；
S2. preparing can be spare as substance B with the initiator ammonium persulfate of step S1 organic monomers generation gelling reaction；
S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；
S4. mixture C is delivered to 3D printing head and gives the temperature that organic monomer can be accelerated to polymerize so that 3D printing head exists Implement printing under 150 DEG C of atmosphere, printed according to three-dimensional modeling data, layer upon layer shaping, finally obtains required shape Base substrate；
S6. the obtained base substrates of step S5 are dried, obtain high intensity base substrate, then dumping and sintered, obtain final products.
Wherein, it is by the Al of low-density in step S12O3Original washing powder body and water are made into low viscosity, high solid volume fraction, flowing The good powder suspension of property（According to actual conditions addition dispersant can be selected to improve solid concentration）, and simultaneous selection is suitable Organic monomer be added to component units gelling system in powder suspension, or the suitable organic monomer of selection and crosslinking agent add Enter and polynary gel rubber system is formed into powder suspension；Substance B selects initiator according to gel rubber system in step S2；Step S4 The middle condition that organic monomer can be accelerated to polymerize is also to be determined according to gel rubber system.
For the above method, the water-based 3D printing former of the present invention may be designed to as shown in Fig. 2, including slurry tank 1, storage Batch can 2, mixing tank 3 and 3D printing equipment 4, slurry tank 1, storage tank 2 are connected with mixing tank 3 respectively, and mixing tank 3 is set with 3D printing First 41 connection of 3D printing in standby 4；
Agitating device 11 is equipped with slurry tank 1, discharge outlet is equipped with metering device 12, and 2 discharge outlet of storage tank is equipped with metering and fills 21 are put, agitating device 31 is equipped with mixing tank 3.
The water-based 3D printing former operation principle of the present invention is as follows：It can occur the slurry A prepared and with organic monomer The substance B of gelling reaction is individually positioned in slurry tank 1 and storage tank 2, if necessary to add initiator and catalyst at the same time, is stored up Batch can 2 at least needs to prepare 2 separately storage initiator and catalyst, then mixes, can also be directly being starched with slurry respectively Catalyst is first added in material, slurry, which fills the working status that the agitating device 11 in 1 is kept stirring, prevents slurry A from depositing, it is necessary to beat When print, three-dimensional modeling data is imported into 3D printing equipment 4, the material in slurry tank 1 and storage tank 2 is respectively by passing through meter Amount device 12 and metering device 21 prepare be delivered in mixing tank 3 in proportion, and the agitating device 31 in mixing tank 3 keeps work shape Mixture C, is delivered in the 3D printing head of 3D printing equipment 4 by state after mixing, and 3D printing equipment 4 is according to threedimensional model number Factually injection prints, and needs to give the temperature that 4 interior energy of 3D printing equipment accelerates organic monomer polymerization in print procedure, obtains base substrate again It is dried, dumping, sintering, finally obtains product.
Wherein, due to slurry A good fluidities, gravity is passed through（Such as under the control of valve）It can complete to convey, mix Close, without ambient pressure, it is contemplated that some situations need to accelerate the efficiency of 3D printing, can also be acted on by pressure（Such as note Penetrate or pump）To accelerate material conveying, mixing.The present invention realizes that the equipment for the condition for accelerating organic monomer polymerization is heating unit, It can be on the print platform of 3D printing equipment to apply object.Specific device and structure those skilled in the art can bases Actual conditions select and design.
The present invention is further illustrated with reference to specific embodiment.Following embodiments are only illustrative examples, not structure Into inappropriate limitation of the present invention, the multitude of different ways that the present invention can be limited and covered by the content of the invention is implemented.It is unless special Do not mentionlet alone bright, the present invention reagent, compound and the equipment that use is the art conventional reagent, compound and equipment.
Embodiment 1
The present embodiment provides a kind of water-based alumina base 3D printing forming method, comprise the following steps：
S1. using water as carrier, it is monomer N, N- methylene bisacrylamide acyl to add mass ratio into deionized water（DMAA）For 50wt%, crosslinking agent methylene-bisacrylamide（MBAM）For 1wt%, dispersant PAA-NH4 is 4wt%, catalyst tetramethyl second two Amine（TMEDA）It is 0.1~1wt%% for 5wt%, defrother, adds the Al that volume ratio is 55%2O3Original washing powder body, after ball grinding stirring Suspension slurry A to low viscosity, high solid volume fraction is spare；
S2. the initiator ammonium persulfate solution that configuration concentration is 1% is spare as substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2 In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2 Agitated to obtain mixture C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data Printed, the temperature that organic monomer can be accelerated to polymerize is given in print procedure, is specifically maintained under 150 DEG C of atmosphere and implements to beat Print so that mixture C cures rapidly, layer upon layer shaping, finally obtains the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base Body, then in the case where flowing atmospheric condition, keeps the temperature 3h at 600 DEG C by high intensity base substrate and carries out dumping processing, then be placed on vacuum bar Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
Originally it is embodied as ensureing to be molded soon during 3D printing（Each layer will not produce deformation during layer upon layer）, improve cure speed Rate and green strength, optimize the proportioning of slurry A, suitably（It is too high to cause impurity excessive on the contrary）Improve the weight of monomer addition Percentage is measured, and implements printing under 150 DEG C of atmosphere.
The base substrate green strength that the present embodiment is prepared reaches 41MPa, and relative density more than 96% is sintered in normal temperature air.
Embodiment 2
The present embodiment provides a kind of water-based alumina base 3D printing forming method, comprise the following steps：
S1. using water as carrier, it is monomer N, N- methylene bisacrylamide acyl to add mass ratio into deionized water（DMAA）For 45t%, Crosslinking agent methylene-bisacrylamide（MBAM）For 0.5wt%, dispersant PAA-NH4 is 3wt%, catalyst tetramethylethylenediamine （TMEDA）It is 0.1~1wt%% for 4wt%, defrother, adds the Al that volume ratio is 55%2O3Original washing powder body, obtains after ball grinding stirring Low viscosity, the suspension slurry A of high solid volume fraction are spare；
S2. the initiator ammonium persulfate solution that configuration concentration is 1% is spare as substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2 In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2 Agitated to obtain mixture C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data Printed, the temperature that organic monomer can be accelerated to polymerize is given in print procedure, is specifically maintained under 150 DEG C of atmosphere and implements to beat Print so that mixture C cures rapidly, layer upon layer shaping, finally obtains the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base Body, then in the case where flowing atmospheric condition, keeps the temperature 3h at 600 DEG C by high intensity base substrate and carries out dumping processing, then be placed on vacuum bar Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
The base substrate green strength that the present embodiment is prepared reaches 34MPa, and relative density more than 95% is sintered in normal temperature air.
Embodiment 3
The present embodiment provides a kind of water-based alumina base 3D printing forming method, comprise the following steps：
S1. using water as carrier, it is monomer N, N- methylene bisacrylamide acyl to add mass ratio into deionized water（DMAA）For 55wt%, crosslinking agent methylene-bisacrylamide（MBAM）For 1.5wt%, dispersant PAA-NH4 is 5wt%, catalyst tetramethyl second Diamines（TMEDA）It is 0.1~1wt%% for 6wt%, defrother, adds the Al that volume ratio is 55%2O3Original washing powder body, after ball grinding stirring It is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction；
The initiator ammonium persulfate solution that configuration concentration is 1% is spare as substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2 In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2 Agitated to obtain mixture C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data Printed, the temperature that organic monomer can be accelerated to polymerize is given in print procedure, is specifically maintained under 150 DEG C of atmosphere and implements to beat Print so that mixture C cures rapidly, layer upon layer shaping, finally obtains the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base Body, then in the case where flowing atmospheric condition, keeps the temperature 3h at 600 DEG C by high intensity base substrate and carries out dumping processing, then be placed on vacuum bar Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
The base substrate green strength that the present embodiment is prepared reaches 36MPa, and relative density more than 97% is sintered in normal temperature air.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, and difference is, Al in step S12O3The volume fraction of original washing powder body is 65%。
The present embodiment the present embodiment changes Al2O3Original washing powder body volume fraction, the base substrate green strength being prepared reach 39MPa, relative density more than 97% is sintered in normal temperature air.
Embodiment 5
The present embodiment is substantially the same manner as Example 1, and difference is, Al in step S12O3The volume fraction of original washing powder body is 20%。
The present embodiment the present embodiment changes Al2O3Original washing powder body volume fraction, the base substrate green strength being prepared reach 32MPa, relative density more than 95% is sintered in normal temperature air.

Claims (9)

  1. A kind of 1. water-based alumina base 3D printing base substrate method, it is characterised in that comprise the following steps：
    S1. using water as carrier, monomer N, N- methylene bisacrylamide acyl, crosslinking agent methylene bisacrylamide acyl are added into deionized water Amine, dispersant PAA-NH4, catalyst TMEDA, add the Al that volume ratio is 20~65%2O3Original washing powder body, obtains after ball grinding stirring Low viscosity, the suspension slurry A of high solid volume fraction are spare；
    S2. preparing can be spare as substance B with the initiator ammonium persulfate of step S1 organic monomers generation gelling reaction；
    S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；
    S4. mixture C is delivered to 3D printing head and gives the temperature that organic monomer can be accelerated to polymerize so that 3D printing head exists Implement printing under 150 DEG C of atmosphere, printed according to three-dimensional modeling data, layer upon layer shaping, finally obtains required shape Base substrate.
  2. 2. water-based alumina base 3D printing base substrate method according to claim 1, it is characterised in that N, N- described in step S1 Methylene bisacrylamide acyl addition is 45~55wt%, and the methylene-bisacrylamide addition is 0.5~1.5wt%, described The addition of PAA-NH4 is 3~5wt%, and the addition of the TMEDA is 4~6wt%.
  3. 3. water-based alumina base 3D printing base substrate method according to claim 1, it is characterised in that gone described in step S1 from Defrother is also added into sub- water.
  4. 4. water-based alumina base 3D printing base substrate method according to claim 1, it is characterised in that over cure described in step S2 Sour ammonium concentration is 1%.
  5. 5. water-based alumina base 3D printing base substrate method according to claim 1, it is characterised in that material described in step S2 The mass ratio of B and slurry A is 2:90~100.
  6. 6. water-based alumina base 3D printing base substrate method according to claim 1, it is characterised in that three-dimensional described in step S4 Model data is that the part model of required planform is designed using 3D sculpting software, and part model is carried out hierarchy slicing Processing, synusia thickness is 0.05~0.2mm.
  7. 7. a kind of water-based alumina base 3D printing forming method, it is characterised in that comprise the following steps：By claim 1~6 times The base substrate that one water-based alumina base 3D printing base substrate method of meaning is prepared is dried, and obtains high intensity base substrate, so Back glue simultaneously sinters, and obtains final products.
  8. 8. water-based alumina base 3D printing forming method according to claim 7, it is characterised in that the drying refers to inciting somebody to action Base substrate places 24~72h in room temperature, is then dried in vacuo at 60 DEG C.
  9. 9. water-based alumina base 3D printing forming method according to claim 7, it is characterised in that the dumping and sinter be Refer to base substrate and 3h progress dumping processing is kept the temperature at 600 DEG C, then place under vacuum, temperature is to be sintered at 1000~1300 DEG C 2h。
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